transhumance
noun/trænzˈhjuːməns/
/trænzˈhjuːməns/
[uncountable] (specialist)- the practice of moving animals to different fields in different seasons, for example to higher fields in summer and lower fields in winter
迁移性放牧 Word Originearly 20th cent.: from French, from the verb transhumer, based on Latin trans- ‘across’ + humus ‘ground’.